{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b339a7d4052a8252dcd19f66c6a7ea0209f0ac6944176963012b5b446eaa706",
    "signature": "0xde1ad04d056cd41adcadfc36b5608ce7f1f9151ea23f3ead0d588c922f945a1324143f308b7e6aae2f553658284be3a23aee9e1644a39da9becd5e2faada38ed1c",
    "signer": "0xFd89388dFc049F47EfEdECbAc41DB097375FD1B6",
    "userId": "833685527"
  }
}